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CERN Accelerating science

R&D and Studies

Latest additions:
2021-03-18
06:00
FCC-hh Conceptual Designs and Windability of the Main Quadrupoles / Genot, Clement (CERN) ; Lorin, Clement (CERN) ; Minier, Gilles (CERN) ; Pepinter, Edouard (CERN) ; Rabti, Yosri (CERN) ; Rochepault, Etienne (CERN) ; Salmi, Tiina (Tampere U. of Tech.) ; Schoerling, Daniel (CERN) ; Tommasini, Davide (Geneva U.)
In the framework of a design study for a post-LHC 100 TeV circular hadron collider, namely FCC-hh, high-gradient Nb$_3$Sn lattice quadrupoles were investigated, following closely the specifications from the optic layout of that machine. After several iterations, a baseline design of the main quadrupole was selected and, then, included in the FCC-hh Conceptual Design Report. [...]
2020 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2020) 4000107

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2021-03-18
06:00
Mechanical Tests, Analysis, and Validation of the Support Structure of the eRMC and RMM Magnets of the FCC R&D at CERN / Pérez, Manuel García (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Perez, Juan Carlos (CERN) ; Bourcey, Nicolas (CERN) ; Grosclaude, Philippe (CERN) ; Guinchard, Michael (CERN) ; Tommasini, Davide (CERN) ; Naini, Sohrab Emami (CERN) ; Ferradas Troitiño, Salvador (CERN)
The enhanced racetrack model coil and racetrack model magnet constitute the current R&D; Nb$_3$Sn magnets under development at CERN aiming to achieve dipole fields of 16-18 T, the design baseline of the Future Circular Collider (FCC). This article reports the mechanical behavior of their common support structure, which underwent three different levels of room-temperature preload (with the bladders and key method) and two cooldown cycles to 80 K. [...]
2020 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4004507

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2021-03-05
14:18
Development of a beam position monitor for co-propagating electron and proton beams / Senes, Eugenio
Novel acceleration technologies promise a large improvement in particle accelerator performance, but pose a number of technical challenges due to the use of several beams and the beam parameters involved [...]
CERN-THESIS-2020-294 - 140 p.

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2021-02-09
06:14
Realization of the optimal beam dilution pattern of the FCC-hh ring using beating frequencies / Barna, Dániel (Wigner RCP, Budapest ; Miskolc U.) ; Facskó, Benedek (Wigner RCP, Budapest) ; Lechner, Anton (CERN) ; Renner, Elisabeth (CERN)
In order to avoid the damage of the dump target of the Future Circular Collider’s proton ring, the beam will be swept over its surface using dilution kickers oscillating in the x/y planes with 90 ∘ phase difference, and an amplitude changing with time, thereby creating a spiral-like pattern. The natural time-dependence of the amplitude is the exponential decay of a damped oscillating circuit, which results in a decreasing pitch, and thereby increasing energy deposition density towards small radii. [...]
2021 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 992 (2021) 165048 Fulltext: PDF;

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2021-02-09
06:14
Stability limits with Landau damping in the FCC-hh / Astapovych, D (Darmstadt, Tech. Hochsch.) ; Boine-Frankenheim, O (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Gubaidulin, V (Darmstadt, Tech. Hochsch.) ; Kornilov, V (Darmstadt, GSI) ; Niedermayer, U (Darmstadt, Tech. Hochsch.) ; Schulte, D (CERN)
The resistive wall impedance is one of the expected main drivers of transverse beam instabilities in the proposed Future Circular Collider hadron-hadron option (FCC-hh). We obtain the resistive wall impedance for the FCC-hh beam screen from a two-dimensional finite element solver. [...]
2021 - 21 p. - Published in : JINST 16 (2021) P01013 Fulltext: PDF;

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2021-01-25
13:08
Cherenkov diffraction radiation in beam diagnostics - investigation of a potential tool for FCC-ee / Schloegelhofer, Andreas
In recent years the investigation of Cherenkov diffraction radiation produced by charged particles passing in close vicinity of dielectric material led to promising prototypes for beam diagnostics [...]
CERN-THESIS-2020-267 - 91 p.

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2020-10-01
06:01
ECLOUD’18 summary and outlook / Cimino, R (Frascati) ; Zimmermann, F (CERN)
This article reports some highlights from the joint INFN/ARIES workshop ECLOUD’18. We focus on electron-cloud eects in the LHC and at SuperKEKB, predictions for future machines like FCC-hh, HE-LHC and FCC-ee, models and parameters for the secondary-emission yield, recent trends in electron-cloud simulations, mitigation measures, and novel phenomena. [...]
2020 - 8 p. Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.229-236 (CERN-2020-007)

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2020-09-14
10:10
Power Converter Maintenance Optimization Using a Model-Based Digital Reliability Twin Paradigm / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Todd, Benjamin (CERN) ; Kranzlmüller, Dieter (Ludwig-Maximilians-Universität München)
Optimization of operations and maintenance activities in factories was estimated to have a global economic potential of 1.2 to 3.7 trillion USD by recent studies. [...]
CERN-ACC-2020-0018 ; https://doi.org/10.1109/ICSRS48664.2019.8987629.
- 2020. - 6 p.
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2020-09-14
10:00
Field-Reliability Predictions based on Statistical System Life Cycle Models / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Todd, Benjamin (CERN) ; Kranzlmüller, Dieter (Ludwig Maximilians Universität Muenchen)
Reliability measures the ability of a system to provide its intended level of service. It is influenced by many factors throughout a system life-cycle. [...]
CERN-ACC-2020-0017.- Geneva : CERN, 2020 - 20 p. Fulltext: PDF;
In : Machine Learning and Knowledge Extraction, Hamburg, Germany, 27 - 30 Aug 2018, pp.98-117

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2020-09-14
09:17
Explainable Deep Learning for Fault Prognostics in Complex Systems: A Particle Accelerator Use-Case / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Apollonio, Andrea (CERN) ; Cartier-Michaud, Thomas (CERN) ; Todd, Benjamin (CERN) ; Müller, Andreas (Hochschule Darmstadt) ; Kranzlmüller, Dieter (Ludwig-Maximilians-Universität Muenchen) ; Apollonio, Andrea (CERN)
Sophisticated infrastructures often exhibit misbehaviour and failures resulting from complex interactions of their constituent subsystems. Such infrastructures use alarms, event and fault information, which is recorded to help diagnose and repair failure conditions by operations experts. [...]
CERN-ACC-2020-0016.- Geneva : CERN, 2020 - 20 p. Fulltext: PDF;
In : , Dublin, Ireland, 25 - 28 Aug 2020, pp.139-158

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Focus on:
PBC - Physics Beyond Colliders (27)
Future Circular Collider Documents (186)